Pre-form ceramic matrix composite cavity and method of forming a ceramic matrix composite component

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(11)

EP 2 650 478 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	11.10.2017 Bulletin 2017/41

(43)	Date of publication A2:
	16.10.2013 Bulletin 2013/42

(21)	Application number: 13154858.8

(22)	Date of filing: 11.02.2013

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International Patent Classification (IPC):

F01D 5/28^(2006.01)

B29D 99/00^(2010.01)

(84)	Designated Contracting States:
	AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
	Designated Extension States:
	BA ME

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Priority:

13.04.2012 US 201213446465

(71)	Applicant: General Electric Company
	Schenectady, NY 12345 (US)

(72)	Inventors:
	Monaghan, Philip Harold Newark, DE 19713 (US) Delvaux, John McConnell Greenville, SC 29615 (US) Taxacher, Glenn Curtis Greenville, SC 29615 (US)

(74)	Representative: Pöpper, Evamaria et al
	General Electric Technology GmbH GE Corporate Intellectual Property Brown Boveri Strasse 7 5400 Baden 5400 Baden (CH)

(54)	Pre-form ceramic matrix composite cavity and method of forming a ceramic matrix composite component

(57) A pre-form CMC cavity and method of forming pre-form CMC cavity for a ceramic matrix component includes providing a mandrel (110), applying a base ply (112) to the mandrel (110), laying-up at least one CMC ply (114) on the base ply (112), removing the mandrel, (110) and densifying the base ply (112) and the at least one CMC ply (114). The remaining densified base ply (112) and at least one CMC ply (114) form a ceramic matrix component having a desired geometry and a cavity formed therein. Also provided is a method of forming a CMC component.

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